* Introduced PipingCalculationActivity in order to run a piping calculation asynchronously from the UI thread and to be able to provide progress notification. * Fixed threading exception when consuming all newly added logmessage a new message has been added. ConcurrentQueue implementation fixes this. * Moved test-data creation methods related to PipingData to new testhelper: PipingDataFactory. Related to Issue [WTI-103] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@478 5a3db67b-de53-47b5-99c8-a1c30a6650e2